Support for lithographic printing plate, lithographic printing plate precursor, and method of producing lithographic printing plate

Abstract

The present invention provides a support for a lithographic printing plate, from which a lithographic printing plate precursor having excellent scratch resistance can be obtained by combining the support with an image recording layer, a lithographic printing plate precursor, and a method of producing a lithographic printing plate. The support for a lithographic printing plate according to the present invention, including an aluminum plate, and an anodized aluminum film disposed on the aluminum plate, in which a plurality of projections are present on a surface of the support for a lithographic printing plate on a side of the anodized film, an average value of equivalent circular diameters of the projections in a cut surface at a position that is 0.5 μm greater than a position of the projections with an average height is in a range of 3.0 to 10.0 μm, and a density of the projections with a height of 0.5 μm or greater from the position of the projections with the average height is in a range of 3,000 to 9,000 pc/mm2.

Dependencies are inferred from the claim text.